Guerilla Grow southeastern kansas

ok i have a spot where i want to put plants and have read for hours on guides on growing marijuana and i think iv got it down. i am just at a loss on what seeds to get. i am pretty set on white widow and afghani feminized. tell me what you think. the weather is very hot in the summer but can drop to cold temperatures at night in early spring. or if u have any recommendations on a seed strain that can grow outside and is still potent would be wonderful